Accounts receivable, net

12 Months Ended

Dec. 31, 2020

Accounts Receivable Net

Accounts receivable, net

NOTE 4 – ACCOUNTS RECEIVABLE, NET

Accounts receivable, net 

Accounts receivable consisted of the following:

		December 31, 2020		December 31, 2019
Accounts receivable	$	19,959	$	12,786
Less: Provision for credit losses		(2,990)		(1,495)
Accounts receivable, net	$	16,969	$	11,291

Charges to provisions for doubtful accounts are summarized as follows:

Allowance for credit losses		Balance at beginning of period		Charges to costs and expenses		Amount utilized		Balance at end of period
Year ended December 31, 2020	$	(1,495)	$	(1,495)	$	—	$	(2,990)
Year ended December 31, 2019	$	(1,495)	$	—	$	—	$	(1,495)
Year ended December 31, 2018	$	(1,495)	$	—	$	—	$	(1,495)

Concentration of credit risk with respect to accounts receivable is limited due to the Company's large number of customers, who are internationally dispersed and have a variety of end markets in which they sell. Due to these factors, management believes that no additional credit risk beyond amounts provided for collection losses is inherent in the Company's trade receivables. For the year ended December 31, 2020, three customers accounted for 23.4%, 19.5% and 11.4%, respectively, of the Company’s total revenues. For the year ended December 31, 2019, three customers accounted for 25.9%, 12.3% and 10.9%, respectively, of the Company’s total revenues and for the year ended December 31, 2018, one customer accounted for 24.5% of the Company's revenue.